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SS23 数据表(PDF) 1 Page - Monolithic Power Systems

部件名 SS23
功能描述  2A, 380 KHz Step-Down Converter
Download  10 Pages
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制造商  MPS [Monolithic Power Systems]
网页  http://www.monolithicpower.com
标志 MPS - Monolithic Power Systems

SS23 数据表(HTML) 1 Page - Monolithic Power Systems

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MP1580
2A, 380 KHz
Step-Down Converter
MP1580 Rev. 3.0
www.MonolithicPower.com
1
12/5/2005
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2005 MPS. All Rights Reserved.
The Future of Analog IC Technology
TM
TM
DESCRIPTION
The MP1580 is a monolithic step-down switch
mode converter with a built in internal power
MOSFET. It achieves 2A continuous output
current over a wide input supply range with
excellent load and line regulation.
Current mode operation provides fast transient
response and eases loop stabilization.
Fault condition protection includes cycle-by-cycle
current limiting and thermal shutdown. In
shutdown mode the regulator draws 23µA of
supply current.
The MP1580 requires a minimum number of
readily available standard external components. A
synchronization pin allows the part to be driven to
600KHz.
EVALUATION BOARD REFERENCE
Board Number
Dimensions
EV0007
2.3”X x 1.5”Y x 0.5”Z
FEATURES
• 2A Output Current
• 0.18Ω Internal Power MOSFET Switch
• Stable with Low ESR Output Ceramic
Capacitors
• Up to 95% Efficiency
• 23µA Shutdown Mode
• Fixed 380KHz Frequency
• Thermal Shutdown
• Cycle-by-Cycle Over Current Protection
• Wide 4.75 to 25V Operating Input Range
• Output Adjustable from 1.22V to 21V
• Programmable Under Voltage Lockout
• Frequency Synchronization Input
• Available in an 8-Pin SO Package
APPLICATIONS
• Distributed Power Systems
• Battery Chargers
• Pre-Regulator for Linear Regulators
“MPS” and “The Future of Analog IC Technology” are Trademarks of Monolithic
Power Systems, Inc.
TYPICAL APPLICATION
MP1580_TAC_S01
MP1580
SW
IN
BS
FB
SYNC
COMP
GND
EN
OUTPUT
2.5V / 2A
INPUT
4.75V to 25V
OPEN
NOT USED
OFF ON
C6
OPEN
C3
2.2nF
C5
10nF
D1
6
5
3
1
2
7
8
4
95
90
85
80
75
70
OUTPUT CURRENT (A)
MP1580_TAC_EC01
Efficiency vs
Output Current Voltage
0
0.5
1.5
12
VOUT = 5.0V
VOUT = 3.3V
VOUT = 2.5V
VIN = 10V


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